/* =============================================================
   ADAPTATION ISLAND — Main Stylesheet
   South Shore Nova Scotia
   =============================================================

   Table of Contents:
   1.  Custom Properties
   2.  Reset & Base
   3.  Typography
   4.  Layout Utilities
   5.  Navigation
   6.  Footer
   7.  Hero Sections
   8.  Photo Placeholders
   9.  Cards & Grid
   10. Buttons & CTAs
   11. Section Styles
   12. Interactive Components
   13. Page-Specific Styles
   14. Responsive
   ============================================================= */

/* ============================================================
   1. CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Warm coastal palette */
  --gold:          #D4A853;
  --gold-warm:     #C8913A;
  --gold-light:    #E8C878;
  --gold-pale:     #F5E8C0;

  --driftwood:     #C4A882;
  --driftwood-mid: #9E845E;
  --driftwood-dark:#6E5A3A;

  --teal:          #2A8A8A;
  --teal-mid:      #1C6868;
  --teal-dark:     #0E4444;

  --ocean:         #1A4A7E;
  --ocean-mid:     #0E3060;
  --ocean-deep:    #071828;

  --berry:         #8B2635;
  --berry-mid:     #6A1A28;
  --cranberry:     #B8304A;

  --seaglass:      #5E9E8E;
  --seaglass-light:#8EC4B4;
  --seaglass-pale: #C8E8E0;

  /* Neutrals */
  --cream:         #FAF8F4;
  --sand:          #F2EBD9;
  --stone:         #E0D5C2;
  --pebble:        #B8A898;
  --bark:          #5C4A32;

  /* Text */
  --text:          #2A1E10;
  --text-mid:      #5C4A32;
  --text-muted:    #8A7A62;

  /* Typography */
  --font-serif:    'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans:     'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --space-xs:      0.5rem;
  --space-sm:      1rem;
  --space-md:      2rem;
  --space-lg:      4rem;
  --space-xl:      7rem;
  --space-2xl:     12rem;

  /* Layout */
  --max-width:     1400px;
  --content-width: 900px;
  --text-width:    68ch;

  /* Transitions */
  --ease:          cubic-bezier(0.4, 0, 0.2, 1);
  --dur:           0.3s;
  --dur-slow:      0.6s;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 17px;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.75;
  color: var(--text);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

input, select, textarea {
  font: inherit;
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.9rem, 3.5vw, 3rem); }
h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 600; }

.serif { font-family: var(--font-serif); }
.italic { font-style: italic; }

p {
  max-width: var(--text-width);
  margin-bottom: 1.4em;
}

p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.25rem;
  line-height: 1.65;
  font-weight: 300;
  color: var(--text-mid);
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--driftwood-mid);
  margin-bottom: 0.75rem;
  display: block;
}

.pull-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  line-height: 1.5;
  color: var(--teal-dark);
  border-left: 3px solid var(--gold);
  padding-left: 1.5rem;
  margin: var(--space-lg) 0;
  max-width: 55ch;
}

.text-gold    { color: var(--gold); }
.text-teal    { color: var(--teal); }
.text-ocean   { color: var(--ocean); }
.text-berry   { color: var(--berry); }
.text-muted   { color: var(--text-muted); }
.text-center  { text-align: center; }

/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.container--narrow {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--space-xl) 0;
}

.section--large {
  padding: var(--space-2xl) 0;
}

.section--tight {
  padding: var(--space-lg) 0;
}

.section--dark {
  background: var(--ocean-deep);
  color: var(--sand);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--sand);
}

.section--dark .eyebrow {
  color: var(--gold);
}

.section--dark p {
  color: var(--stone);
}

.section--teal {
  background: var(--teal-dark);
  color: var(--seaglass-pale);
}

.section--teal h2, .section--teal h3 { color: var(--cream); }
.section--teal .eyebrow { color: var(--gold); }

.section--sand {
  background: var(--sand);
}

.section--stone {
  background: var(--stone);
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--2-1 { grid-template-columns: 2fr 1fr; }
.grid--1-2 { grid-template-columns: 1fr 2fr; }

.flow > * + * { margin-top: 1.5rem; }
.flow-sm > * + * { margin-top: 0.75rem; }

.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }

.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }

/* ============================================================
   5. NAVIGATION
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: background var(--dur) var(--ease),
              padding var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.site-nav.scrolled {
  background: rgba(250, 248, 244, 0.96);
  backdrop-filter: blur(8px);
  padding: 0.8rem 0;
  box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}

.site-nav.nav--transparent {
  background: transparent;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
  line-height: 1.1;
  transition: color var(--dur);
}

.nav-brand-sub {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1;
}

.site-nav.nav--hero .nav-brand-name,
.site-nav.nav--hero .nav-brand-sub {
  color: var(--cream);
}

.site-nav.scrolled .nav-brand-name { color: var(--text); }
.site-nav.scrolled .nav-brand-sub  { color: var(--text-muted); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-mid);
  padding: 0.5rem 0.7rem;
  border-radius: 4px;
  transition: color var(--dur), background var(--dur);
  white-space: nowrap;
}

.site-nav.nav--hero .nav-links a { color: rgba(255,255,255,0.85); }
.site-nav.scrolled  .nav-links a { color: var(--text-mid); }

.nav-links a:hover,
.nav-links a.active {
  color: var(--teal);
  background: rgba(46, 139, 139, 0.08);
}

.site-nav.nav--hero .nav-links a:hover {
  color: var(--gold-light);
  background: rgba(255,255,255,0.12);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--dur) var(--ease);
  transform-origin: center;
}

.site-nav.nav--hero .nav-toggle span { background: var(--cream); }
.site-nav.scrolled  .nav-toggle span { background: var(--text); }

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   6. FOOTER
   ============================================================ */
.site-footer {
  background: var(--ocean-deep);
  color: var(--stone);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.footer-witness {
  border-left: 3px solid var(--gold);
  padding-left: 1.5rem;
  margin-bottom: var(--space-lg);
  max-width: 45ch;
}

.footer-witness p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--stone);
  margin-bottom: 0.4em;
  max-width: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: var(--space-lg);
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.footer-col ul li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--pebble);
  transition: color var(--dur);
}

.footer-col a:hover { color: var(--gold-light); }

.footer-alliance {
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  text-align: center;
  font-size: 0.85rem;
  color: var(--pebble);
}

.footer-alliance a {
  color: var(--seaglass);
  text-decoration: none;
}

.footer-alliance a:hover { color: var(--gold-light); }

/* External nav link */
.nav-external a {
  color: var(--seaglass) !important;
  font-style: italic;
  font-size: 0.85em;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: var(--space-lg);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   7. HERO SECTIONS
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    160deg,
    rgba(7, 24, 40, 0.55) 0%,
    rgba(14, 48, 96, 0.35) 50%,
    rgba(46, 139, 139, 0.15) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--space-xl) + 4rem) 2rem var(--space-xl);
}

.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.25rem;
  display: block;
}

.hero h1 {
  color: var(--cream);
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
  max-width: 18ch;
  margin-bottom: 1.5rem;
}

.hero-intro {
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: rgba(242, 235, 217, 0.9);
  max-width: 55ch;
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 2.5rem;
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.6);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: scroll-hint 2.5s ease-in-out infinite;
}

.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
}

@keyframes scroll-hint {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) translateY(0); }
  50%       { opacity: 1;   transform: translateX(-50%) translateY(6px); }
}

/* Page-level sub-heroes (not full screen) */
.page-hero {
  position: relative;
  padding: calc(var(--space-xl) + 3rem) 0 var(--space-xl);
  overflow: hidden;
}

.page-hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to right,
    rgba(7, 24, 40, 0.7) 0%,
    rgba(7, 24, 40, 0.4) 60%,
    transparent 100%
  );
}

.page-hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  max-width: 700px;
}

.page-hero h1 { color: var(--cream); }
.page-hero .lead { color: rgba(242, 235, 217, 0.88); }

/* ============================================================
   8. PHOTO PLACEHOLDERS
   ============================================================ */
.photo-ph {
  position: relative;
  overflow: hidden;
  background: var(--stone);
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
}

.photo-ph::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.9;
}

.photo-ph__label {
  position: relative;
  z-index: 1;
  padding: 0.75rem 1rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(4px);
  border-radius: 0 4px 0 0;
}

/* Gradient variants */
.photo-ph--sunrise::before {
  background: linear-gradient(135deg, #D4A853 0%, #E8734A 40%, #1A3A5C 100%);
}
.photo-ph--ocean::before {
  background: linear-gradient(160deg, #071828 0%, #1A4A7E 45%, #2A8A8A 100%);
}
.photo-ph--forest::before {
  background: linear-gradient(135deg, #2A4A2A 0%, #4A7A4A 50%, #8EC4B4 100%);
}
.photo-ph--shore::before {
  background: linear-gradient(145deg, #B8A898 0%, #E8C878 40%, #1A4A7E 100%);
}
.photo-ph--meadow::before {
  background: linear-gradient(130deg, #6A9A4A 0%, #E8C878 55%, #D4A853 100%);
}
.photo-ph--dusk::before {
  background: linear-gradient(150deg, #8B2635 0%, #D4A853 50%, #1A3A5C 100%);
}
.photo-ph--bog::before {
  background: linear-gradient(135deg, #1A3A18 0%, #4A6E3A 40%, #8EC4B4 100%);
}
.photo-ph--cabin::before {
  background: linear-gradient(135deg, #5C4A32 0%, #8A6A3A 40%, #D4A853 100%);
}

/* Aspect ratios */
.ar-hero     { aspect-ratio: 16 / 9; }
.ar-landscape{ aspect-ratio: 3 / 2; }
.ar-portrait { aspect-ratio: 2 / 3; }
.ar-square   { aspect-ratio: 1; }
.ar-wide     { aspect-ratio: 21 / 9; }
.ar-tall     { aspect-ratio: 4 / 5; }
.ar-panorama { aspect-ratio: 4 / 1; }

.photo-full {
  width: 100%;
}

/* ============================================================
   9. CARDS & GRID
   ============================================================ */
.card {
  background: var(--cream);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(42, 30, 16, 0.14);
}

.card__body {
  padding: 1.75rem;
}

.card__eyebrow { margin-bottom: 0.5rem; }

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.card p { font-size: 0.92rem; }

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal);
  margin-top: 1.25rem;
  transition: gap var(--dur);
}

.card__link:hover { gap: 0.7rem; color: var(--teal-dark); }

.card__link::after {
  content: '→';
  display: inline-block;
  transition: transform var(--dur);
}

.card:hover .card__link::after { transform: translateX(3px); }

/* Entry point cards on homepage */
.entry-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: 8px;
  background: var(--ocean-deep);
}

.entry-card .photo-ph {
  aspect-ratio: 3 / 2;
  transition: transform var(--dur-slow) var(--ease);
}

.entry-card:hover .photo-ph {
  transform: scale(1.04);
}

.entry-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,24,40,0.85) 0%, transparent 55%);
  z-index: 2;
}

.entry-card__content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.75rem;
  z-index: 3;
}

.entry-card__eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.4rem;
}

.entry-card h3 {
  color: var(--cream);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.entry-card p {
  color: rgba(242,235,217,0.8);
  font-size: 0.88rem;
  margin-bottom: 0;
  max-width: 30ch;
}

/* Timeline component */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--stone);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-lg);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.45rem;
  top: 0.4rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  border: 2px solid var(--cream);
  box-shadow: 0 0 0 2px var(--gold);
}

.timeline-date {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--driftwood-mid);
  margin-bottom: 0.4rem;
}

.timeline-item h4 { margin-bottom: 0.5rem; }

/* ============================================================
   10. BUTTONS & CTAs
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all var(--dur) var(--ease);
  cursor: pointer;
}

.btn--primary {
  background: var(--gold);
  color: var(--text);
}

.btn--primary:hover {
  background: var(--gold-warm);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 83, 0.35);
}

.btn--outline {
  border: 2px solid currentColor;
  color: var(--teal);
}

.btn--outline:hover {
  background: var(--teal);
  color: var(--cream);
}

.btn--ghost {
  border: 2px solid rgba(255,255,255,0.5);
  color: var(--cream);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.8);
}

.btn--dark {
  background: var(--ocean-deep);
  color: var(--cream);
}

.btn--dark:hover {
  background: var(--ocean-mid);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* ============================================================
   11. SECTION STYLES
   ============================================================ */

/* Chapter intro — used at top of each section */
.chapter-intro {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-xl) 2rem var(--space-lg);
  text-align: center;
}

.chapter-intro h2 { margin-bottom: 1.25rem; }

.chapter-intro .lead {
  margin: 0 auto;
  max-width: 60ch;
}

/* Feature block — large image + text side by side */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
}

.feature--reversed { direction: rtl; }
.feature--reversed > * { direction: ltr; }

.feature__text h2 { margin-bottom: 1.25rem; }
.feature__text p   { color: var(--text-mid); }
.feature__media { border-radius: 8px; overflow: hidden; }

/* Stat / highlight strip */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
}

.stat-item {
  padding: var(--space-lg) var(--space-md);
  border-right: 1px solid rgba(255,255,255,0.1);
}

.stat-item:last-child { border-right: none; }

.stat-number {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.4rem;
  display: block;
}

.stat-label {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stone);
}

/* Accordion / expandable content */
.accordion-item {
  border-bottom: 1px solid var(--stone);
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  padding: 1.25rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--dur);
}

.accordion-trigger:hover { color: var(--teal); }

.accordion-icon {
  font-size: 1.4rem;
  line-height: 1;
  transition: transform var(--dur) var(--ease);
  color: var(--gold);
  flex-shrink: 0;
}

.accordion-item.open .accordion-icon { transform: rotate(45deg); }

.accordion-content {
  display: none;
  padding-bottom: 1.5rem;
}

.accordion-content p { color: var(--text-mid); }
.accordion-item.open .accordion-content { display: block; }

/* Tag / badge */
.tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--stone);
  color: var(--text-mid);
}

.tag--gold     { background: var(--gold-pale);    color: var(--driftwood-dark); }
.tag--teal     { background: var(--seaglass-pale); color: var(--teal-dark); }
.tag--berry    { background: rgba(139,38,53,0.1);  color: var(--berry); }
.tag--ocean    { background: rgba(26,74,126,0.1);  color: var(--ocean); }

/* ============================================================
   12. INTERACTIVE COMPONENTS
   ============================================================ */

/* Sea Level Slider */
.sea-level-section { background: var(--ocean-deep); color: var(--cream); }

.sea-level-viz {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.sea-level-svg { display: block; width: 100%; }

.sl-controls {
  padding: 2rem 0;
  text-align: center;
}

.sl-labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.sl-label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pebble);
  cursor: pointer;
  transition: color var(--dur);
}

.sl-label.active { color: var(--gold); font-weight: 600; }

.sl-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.sl-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--ocean-deep);
  cursor: pointer;
  box-shadow: 0 0 0 2px var(--gold);
}

.sl-info {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
  text-align: left;
}

.sl-info h4 {
  color: var(--gold);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.sl-info p { font-size: 0.88rem; color: var(--stone); margin-bottom: 0; max-width: none; }

/* Observation Log */
.obs-log {
  background: var(--cream);
  border-radius: 8px;
  overflow: hidden;
}

.obs-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 1.25rem;
  border-bottom: 1px solid var(--stone);
  background: var(--sand);
}

.obs-filter-btn {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  border: 1.5px solid var(--stone);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-mid);
  background: transparent;
  cursor: pointer;
  transition: all var(--dur);
}

.obs-filter-btn:hover,
.obs-filter-btn.active {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--cream);
}

.obs-entries {
  padding: 0;
}

.obs-entry {
  padding: 1.5rem;
  border-bottom: 1px solid var(--stone);
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.5rem;
  align-items: start;
}

.obs-entry:last-child { border-bottom: none; }

.obs-date {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.obs-date strong {
  display: block;
  font-weight: 700;
  color: var(--text-mid);
  font-size: 1.05rem;
}

.obs-season-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 10px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.3rem;
}

.obs-season-tag.spring  { background: var(--seaglass-pale); color: var(--teal-dark); }
.obs-season-tag.summer  { background: var(--gold-pale);      color: var(--driftwood-dark); }
.obs-season-tag.fall    { background: rgba(176,48,74,0.1);   color: var(--berry); }
.obs-season-tag.winter  { background: rgba(26,74,126,0.1);   color: var(--ocean); }

.obs-body h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.obs-body p {
  font-size: 0.9rem;
  color: var(--text-mid);
  margin-bottom: 0;
  max-width: none;
}

/* Seasonal Filter (Activities) */
.season-filters {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.season-btn {
  padding: 0.6rem 1.5rem;
  border-radius: 30px;
  border: 2px solid var(--stone);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-mid);
  background: transparent;
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}

.season-btn:hover { border-color: var(--teal); color: var(--teal); }

.season-btn.active[data-season="all"]    { background: var(--text); border-color: var(--text); color: var(--cream); }
.season-btn.active[data-season="spring"] { background: var(--seaglass); border-color: var(--seaglass); color: var(--cream); }
.season-btn.active[data-season="summer"] { background: var(--gold-warm); border-color: var(--gold-warm); color: var(--cream); }
.season-btn.active[data-season="fall"]   { background: var(--berry); border-color: var(--berry); color: var(--cream); }
.season-btn.active[data-season="winter"] { background: var(--ocean); border-color: var(--ocean); color: var(--cream); }

.activity-card {
  background: var(--cream);
  border-radius: 8px;
  overflow: hidden;
  transition: all var(--dur) var(--ease);
}

.activity-card.hidden {
  display: none;
}

/* SVG Map */
.map-container {
  position: relative;
  background: var(--ocean);
  border-radius: 12px;
  overflow: hidden;
}

.map-svg { display: block; width: 100%; }

.map-landmark {
  cursor: pointer;
  transition: opacity var(--dur);
}

.map-landmark:hover { opacity: 0.8; }

.map-tooltip {
  position: absolute;
  background: rgba(7, 24, 40, 0.92);
  color: var(--cream);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  pointer-events: none;
  display: none;
  z-index: 10;
  max-width: 200px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.1);
}

.map-tooltip h5 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--gold);
  margin-bottom: 0.25rem;
}

.map-tooltip p { font-size: 0.8rem; color: var(--stone); margin-bottom: 0; max-width: none; }

/* ============================================================
   13. PAGE-SPECIFIC STYLES
   ============================================================ */

/* Bearing Witness journal quote */
.witness-quote {
  background: var(--ocean-mid);
  border-left: 4px solid var(--teal);
  padding: 2rem 2rem 2rem 2.5rem;
  border-radius: 0 8px 8px 0;
  margin: var(--space-lg) 0;
}

.witness-quote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--sand);
  margin-bottom: 0.5rem;
  max-width: none;
}

.witness-quote cite {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--pebble);
}

/* pH / data callout */
.data-callout {
  background: rgba(46,139,139,0.12);
  border: 1px solid rgba(46,139,139,0.3);
  border-radius: 8px;
  padding: 1.75rem;
}

.data-callout .stat-number { color: var(--teal); }

/* Species list */
.species-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.species-item {
  padding: 1rem;
  background: var(--sand);
  border-radius: 6px;
  border-left: 3px solid var(--seaglass);
}

.species-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.species-item em {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Trail listing */
.trail-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--stone);
}

.trail-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--teal-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--seaglass-light);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.trail-meta {
  display: flex;
  gap: 1rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
}

.trail-meta span {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Landmark card */
.landmark-card {
  background: var(--sand);
  border-radius: 8px;
  padding: 2rem;
  border-top: 3px solid var(--gold);
}

.landmark-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

/* ============================================================
   14. RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-bottom: 1px solid rgba(255,255,255,0.1); }
  .feature { grid-template-columns: 1fr; gap: 2.5rem; }
  .feature--reversed { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  html { font-size: 16px; }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 100vw);
    background: var(--cream);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    padding: 6rem 2.5rem 2rem;
    transform: translateX(100%);
    transition: transform var(--dur-slow) var(--ease);
    box-shadow: -8px 0 40px rgba(0,0,0,0.15);
  }

  .nav-links.open { transform: translateX(0); }

  .nav-links a {
    font-size: 1rem;
    padding: 0.85rem 0;
    width: 100%;
    border-bottom: 1px solid var(--stone);
    color: var(--text-mid) !important;
    border-radius: 0;
  }

  .nav-links a:hover { color: var(--teal) !important; background: none; }

  .nav-toggle { display: flex; }

  .grid--2 { grid-template-columns: 1fr; }
  .grid--2-1 { grid-template-columns: 1fr; }
  .grid--1-2 { grid-template-columns: 1fr; }

  .section { padding: var(--space-lg) 0; }
  .section--large { padding: var(--space-xl) 0; }

  .chapter-intro { padding: var(--space-lg) 1.5rem; }

  .hero-content { padding-top: calc(var(--space-lg) + 5rem); }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

  .obs-entry { grid-template-columns: 1fr; gap: 0.75rem; }
  .stats-strip { grid-template-columns: 1fr 1fr; }

  .feature { gap: 2rem; }

  .container { padding: 0 1.25rem; }
  .container--narrow { padding: 0 1.25rem; }
}

@media (max-width: 480px) {
  .stats-strip { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: 1fr; }
  .btn-group { flex-direction: column; align-items: flex-start; }
  .hero h1 { font-size: 2.2rem; }
}

/* ============================================================
   TRANSITIONS & ANIMATIONS
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* Utility */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  border: 0;
}

.no-scroll { overflow: hidden; }